It is most likely a syntax error in your edit, like adding an extra or leaving out a bracket. Also make sure there are no extra commas, apostrophies, quotes, slashes, etc. that aren't part of the WL tags. Check your help file to make sure that the WL tags you are using are valid for your setup. Compare your edited version with your original and check carefully for such. If you no longer have the pre-edit version, copy/paste from the default davis template (the davissticker portion) upload to make sure it works, then try to edit it again.
Keep us updated on your progress. Good luck.